Charge method of lead-acid storage battery

A lead-acid battery and charging method technology, applied in the direction of secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of excessive gas discharge, battery scrap, battery life impact, etc., so as to shorten the charging time and prolong the use. effect of life

Inactive Publication Date: 2014-04-30
JIANGSU JIAYU NEW POWER TECH
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Problems solved by technology

[0003] At present, the commonly used charging methods are: constant current charging method, adjusting the output voltage of the charging device or changing the resistance in series with the battery to keep the charging current intensity constant, but in the later stage of charging, the charging current is mostly used for electrolysis of water to generate gas. Excessive air discharge; constant voltage charging method keeps the voltage at a constant value during the entire charging time. As the ter

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  • Charge method of lead-acid storage battery
  • Charge method of lead-acid storage battery

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[0018] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 2 Shown is a schematic diagram of the entire charging process of a lead-acid battery of the present invention. The entire charging process is divided into six stages: The first stage is the pre-charging stage. When the battery is connected to the charger, the charger detects the voltage of the battery At this time, the voltage is V1, and the constant current pre-charging is performed with the first preset current I1 (0.02-0.025C). The voltage of the battery or battery pack gradually rises from V1 to V2. When the charging time reaches S1, it will enter the next stage of charging , And S1 is less than 4 hours.

[0020] The second stage is the constant current charging stage. Constant current charging is performed with the second preset current I2 (0.15-0.25C). The voltage gradually rises from V2 to V3. When the charg...

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Abstract

The invention discloses a charge method of a lead-acid storage battery. Different charge voltage and current are controlled in six phases, wherein in the first phase of pre-charge, the battery is activated with low current; in the second phase of constant current, the battery is charged with high current; in the third phase of constant voltage, the voltage is maintained while the current is limited; in the fourth phase of trickle charge, low-current trickle charge is realized; the fifth phase realizes secondary constant-voltage charge; in the sixth phase of float charge, float charge with low current is realized. According to the method, a phase of secondary constant-voltage charge is added based on the existing five-stage comprehensive charge method, and the lead sulfide of the cathode of the lead-acid storage battery can be sufficiently decomposed in the phase, thus the lead-acid storage battery can be fully charged and is not damaged by the sulfation thereof due to insufficient charge; meanwhile, overcharge is avoided for sure, the service life of the battery is prolonged, and the charge time is shortened.

Description

technical field [0001] The invention relates to an electric vehicle battery, in particular to a charging method for a lead-acid storage battery of a new energy vehicle. Background technique [0002] In recent years, with the vigorous development of the new energy vehicle industry, the application of high-power lead-acid batteries in new energy vehicles has also received more and more attention, especially the charging of lead-acid batteries has attracted everyone's attention. Due to long-term insufficient charging of lead-acid batteries or failure to charge them in time after discharge, the batteries will be vulcanized. Therefore, the charging method of lead-acid batteries is an important subject of research. [0003] At present, the commonly used charging methods are: constant current charging method, adjusting the output voltage of the charging device or changing the resistance in series with the battery to keep the charging current intensity constant, but in the later sta...

Claims

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Application Information

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IPC IPC(8): H01M10/44
CPCH01M10/44Y02E60/10
Inventor 王金明
Owner JIANGSU JIAYU NEW POWER TECH
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